Abstract: A converter assembly has a converter with multiple converter valves, each with a plurality of semiconductor switches, and with a stored energy source branch which is connected in parallel with at least one of the converter valves. The stored energy source branch has voltage converter modules and stored energy source modules. The voltage converter modules are connected to one another in a series circuit on the input side and to the respectively associated stored energy source module on the output side. There is also described an assembly having the stored energy source branch and a method for stabilizing an alternating current system by way of the converter assembly.

Abstract: A converter assembly has a converter with multiple converter valves, each with a plurality of semiconductor switches, and with a stored energy source branch which is connected in parallel with at least one of the converter valves. The stored energy source branch has voltage converter modules and stored energy source modules. The voltage converter modules are connected to one another in a series circuit on the input side and to the respectively associated stored energy source module on the output side. There is also described an assembly having the stored energy source branch and a method for stabilizing an alternating current system by way of the converter assembly.

Abstract: A power plant installation includes a feed connection for feeding energy into an external energy supply grid and at least one energy-generating unit. The power plant installation includes at least one energy storage unit and at least one isolated component grid which is connected to the feed connection via a converter of the power plant installation and is electrically isolated from the feed connection and the external energy supply grid by the converter, the at least one energy-generating unit and/or the at least one energy storage unit are connected to the isolated component network, and the powerplant installation has a control device which, by actuating the converter, the energy-generating unit and/or the energy storage unit, adjusts the feed behaviour of the power plant installation which is effective towards the outside at the feed connection.